emergency vs provisional

emergency

noun
  • Arising from or used in an emergency. 

  • A situation which poses an immediate risk and which requires urgent attention. 

  • An individual brought in at short notice to replace a member of staff, a player in a sporting team, etc. 

  • The department of a hospital that treats emergencies. 

provisional

noun
  • An interim denture. 

  • A postage stamp issued locally before an official issue is released. 

adj
  • Temporary, but with the intention of eventually becoming permanent or being replaced by a permanent equivalent. 

How often have the words emergency and provisional occurred in a corpus of books? (source: Google Ngram Viewer )